What is the name of the bone that articulates with the tibia via a syndesmosis?

The bone that articulates with the tibia via a syndesmosis is the fibula. A syndesmosis is a type of fibrous joint where bones are connected by a ligament or a sheet of tissue, allowing for limited movement. In the case of the tibia and fibula, they are connected at both the proximal and distal ends by syndesmotic tissue. This joint configuration is crucial for the stability of the lower leg, enabling movements such as walking and running while maintaining the alignment of both bones.

The tibia, while being the larger bone of the lower leg, does not have a syndesmosis joint with itself. Similarly, the femur and pelvis are part of different anatomical regions and do not connect to the tibia in this manner. Thus, the fibula’s role in forming this specific type of joint with the tibia makes it the correct answer.